/*
 * Copyright (C) 2009 M. Hautle.
 * 
 * This file is part of TrackedBean.
 * 
 * TrackedBean is free software: you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free
 * Software Foundation, either version 3 of the License, or (at your option) any later version.
 * 
 * TrackedBean is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
 * A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public License along with TrackedBean. If not, see <http://www.gnu.org/licenses/>.
 */
package ch.trackedbean.util;

/**
 * Accessor just returning the passed value.
 * 
 * @author M. Hautle
 */
public class SelfAccessor implements IValueAccessor<Object> {
	/** Single instance of this accessor. */
	public static final SelfAccessor ME = new SelfAccessor();

	/**
	 * Hidden constructor.
	 */
	private SelfAccessor() {
	}

	/**
	 * {@inheritDoc}
	 */
	@Override
	public String getPath() {
		return "";
	}

	/**
	 * {@inheritDoc}
	 */
	@Override
	public Class<Object> getType() {
		return Object.class;
	}

	/**
	 * Returns just the passed element.
	 * 
	 * @param element The element
	 * @param fallback Not used
	 * @return The passed element
	 */
	@Override
	public Object getValue(Object element, Object fallback) {
		return element;
	}

	/**
	 * Does nothing (you can't set a value on yourself :) )
	 * 
	 * @param element Not used
	 * @param value Not used
	 * @return false
	 */
	@Override
	public boolean setValue(Object element, Object value) {
		return false;
	}
}
